Other forms: waists
On a human, the waist is the narrowing between the ribs and the hips –- though for many of us, "narrowing" may actually be "expanding."
Waist can also refer to the part of a piece of clothing that covers the waist — like the waist (or waistline) of a dress or a jacket. Most likely you know these most common definitions of waist, but did you know that a waist can also be the narrow part of a shoe, or of a violin? Don’t confuse the definition of waist with waste, though the words have the same pronunciation.